Just thinking aloud here about that Rossi. It looks like the same action used in their single shot rifle. If it's the same difference and you could buy just the rifle barrel it would be pretty easy to have those barrels cut down to 14".
As far as the Comanche, it's fun to play with and I bought mine because it was cheaper than buying just a Contender barrel. But that trigger made me sell it off pretty quick and pay the coin for a Contender barrel. Maybe it was just mine but the trigger pull was brutal.
John A. Monroe, Never Forgive, Never Forget, Blood Pays Blood